Tumblers are built by a fish hobbyist for the hobbyist in mind.Each Tumbler measures 2 1/2" around at the base by 4" tall with a 4" tube at the top. They are not built with epoxy the parts are bonded together built to last. The Tumbler comes with 2 feet of air hose, air control valve, and suction cup. New style base that prevents eggs from being sucked through the bottom. I use these Egg Tumblers in my own tanks and they work great. I make these with a 2 1/2" base, and I use them for my Frontosa and Pleco's and all my other mouth brooder fish. Any one that has seen Frontosa eggs know they are very big; I have had no problems fitting large amounts of eggs in them. I have found for best results place near the top of the tank so the top of the lift tube is an inch or so below the water surface. All you need to do is hook the tumbler up to an air source. When you turn the air on you want the eggs to gently bounce around, you do not want to overdo the air flow too much bounce will damage the eggs. I will ship item as soon as I receive payment.1 - $ 25.00 buy 3 - $ 65.00I accept pay pal. Shipping will be $7.95 for up to 3 Tumbler and $2.00 for each additional tumbler in the U.S. I am not responsible for lost items (I use USPS priority shipping and you will get a tracking number with e-mail notice of shipment.) any questions or more photos just e-mail me.